If you are given the mean, median and mode of five positive whole numbers, can you find the numbers?
Cut four triangles from a square as shown in the picture. How many different shapes can you make by fitting the four triangles back together?
A game for two people, or play online. Given a target number, say 23, and a range of numbers to choose from, say 1-4, players take it in turns to add to the running total to hit their target.
In how many ways can you fit all three pieces together to make shapes with line symmetry?
Four bags contain a large number of 1s, 3s, 5s and 7s. Can you pick any ten numbers from the bags so that their total is 37?
